#!/usr/bin/python3
import argparse

from mensa import logic
from mensa import base

parser = argparse.ArgumentParser(description='Fetch menus from various sources')
parser.add_argument('rest', nargs="*",
                    metavar='RESTAURANT',
                    help='Fetch menus from this restaurant')
parser.add_argument('-l', '--list-restaurants',  dest='list', action='store_true',
                    help='get list of restaurants')
parser.add_argument('-f', '--formatter', dest='form', action='store', nargs=1, help="formatter to use")
parser.add_argument('-p', '--pos', dest='pos', action='store', nargs=1, help="Your current position")
parser.add_argument('-d', '--dist', dest='dist', action='store_true', help="Show distances to restaurants")
parser.add_argument('-r', '--radius', dest='rad', action='store', nargs=1, help="Radius to find restaurants in")
parser.add_argument('-g', '--vegetarian',  dest='vegetarian', action='store_true',
                    help='show only vegetarian meals')
parser.add_argument('-G', '--vegan',  dest='vegan', action='store_true',
                    help='show only vegan meals')
parser.add_argument('--studentenwerk-prices',  dest='student', action='store_true', default=False,
                    help='show only student prices')

parser.add_argument('--no-parallel', dest="no_parallel", action="store_true", default=False, help="Do not parallelize fetching, might help with rate-limited websites")


args = parser.parse_args()
## Load backends
logic.init_foodsources()
## Load frontends
logic.init_renderers()
veggie = 0
form = ["plain-text"]
if args.dist and not args.pos or args.rad and not args.pos :
    print("-d and -r require a position")
    exit(1)


if args.pos :
    try :
        args.pos = tuple([ float(i) for i in args.pos[0].split(",")])
        assert len(args.pos) == 2
    except :
        print("-p has the format LAT,LONG. For instance: 52.5133727,13.3240049")
        exit(1)
if args.rad :
    try :
        args.rad = float(args.rad[0])
    except :
        print("-r requires a floating point number!")
        exit(1)
if args.form :
    form = args.form



if args.vegetarian :
    veggie = 1
if args.vegan :
    veggie = 2



if args.list :
    for k,i in base.foodsources.items():
        print(i.name, i.human_name)
    exit()
restlist = None
if args.rest :
    restlist = args.rest

foodl = logic.get_food(restlist, no_parallel=args.no_parallel, pos=args.pos, rad=args.rad, only_student_prices=args.student)
logic.render(foodl, form, only_veggie=veggie, only_student_prices=args.student, pos=args.pos, dist=args.dist)